Can F1 justify having four races in the Middle East?

From a low-key beginning with Bahrain in 2004, F1 now has four grands prix in the region, all with contracts that ensure they will be on the calendar for the foreseeable future.
Even allowing for the inevitable expansion beyond this year’s 22 races that is a high percentage of events concentrated in a relatively small part of the world. So how has it come to pass, and what does it mean for …Keep reading